192
WHUS73 KDTX 310736
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
336 AM EDT Thu Jul 31 2025

LHZ421-010200-
/O.EXT.KDTX.SC.Y.0060.000000T0000Z-250801T0800Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
336 AM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM EDT FRIDAY...

* WHAT...Expect sustained winds up to 19 knots from the
  northeast with gusts up to 23 knots. The largest significant
  waves will be 6 feet with a potential maximum wave height of 8
  feet.

* WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to
  Inner Saginaw Bay.

* WHEN...The maximum winds are expected around 4 PM EDT Thursday
  with the largest waves expected around 1 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LEZ444-010200-
/O.CON.KDTX.SC.Y.0060.000000T0000Z-250801T0800Z/
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
336 AM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT FRIDAY...

* WHAT...Expect sustained winds up to 19 knots from the
  northeast with gusts up to 22 knots. The largest significant
  waves will be 3 feet with a potential maximum wave height of 4
  feet.

* WHERE...Michigan Waters of Lake Erie from Detroit River to
  North Cape MI.

* WHEN...The maximum winds are expected around 5 AM EDT Thursday
  with the largest waves expected around 7 AM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LHZ441>443-010200-
/O.CON.KDTX.SC.Y.0060.000000T0000Z-250801T0800Z/
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
336 AM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT FRIDAY...

* WHAT...Expect sustained winds up to 20 knots from the
  northeast with gusts up to 26 knots. The largest significant
  waves will be 6 feet with a potential maximum wave height of 8
  feet.

* WHERE...Port Austin to Harbor Beach MI, Harbor Beach to Port
  Sanilac MI and Port Sanilac to Port Huron MI.

* WHEN...The maximum winds are expected around 6 PM EDT Thursday
  with the largest waves expected around 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LHZ422-010200-
/O.CON.KDTX.SC.Y.0060.000000T0000Z-250801T0200Z/
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
336 AM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

* WHAT...Expect sustained winds up to 20 knots from the
  northeast with gusts up to 24 knots. The largest significant
  waves will be 4 feet with a potential maximum wave height of 5
  feet.

* WHERE...Inner Saginaw Bay SW of Point Au Gres to Bay Port MI.

* WHEN...The maximum winds are expected around 4 PM EDT Thursday
  with the largest waves expected around 4 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LCZ460-010200-
/O.CON.KDTX.SC.Y.0060.000000T0000Z-250801T0800Z/
Lake St Clair-
336 AM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT FRIDAY...

* WHAT...Expect sustained winds up to 17 knots from the
  northeast with gusts up to 22 knots. The largest significant
  waves will be 2 feet with a potential maximum wave height of 3
  feet.

* WHERE...Lake St Clair.

* WHEN...The maximum winds are expected around 9 PM EDT Thursday
  with the largest waves expected around 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$